Wilbert Henry Hass (1906-1959) was an invertebrate paleontologist specializing in the study of conodonts. He joined the Section of Paleontology and Stratigraphy of the United States Geological Survey (USGS) in 1930 when he was appointed Junior Scientific Aid. He was promoted to the rank of Geologist in 1940 and remained with the USGS for the remainder of his life.